This figure shows the CS integrated intensity maps at different velocity ranges. The red background represents the CS integrated intensity, overlaid with SiO (2–1) emission (black contours) and C¹⁸O (2–1) emission (gray contours). The integrated velocity ranges from 40 to 44.5 km s⁻¹ (blue-shifted gas; left panel), 44.5 to 45.5 km s⁻¹ (ambient gas; central panel), and 45.5 to 50 km s⁻¹ (red-shifted gas; right panel). SiO (2–1) black contour levels start at 3σ and increase by 0.2I_peak up to I_peak. The rms noise levels (σ) for the different velocity components are 7.4, 7.5, and 7.4 Jy beam⁻¹ km s⁻¹, and the corresponding peak intensities (I_peak) are 1010, 288, and 877 Jy beam⁻¹ km s⁻¹, respectively. The C¹⁸O gray contour levels in the left panel are 0.738, 1.107, 1.476, and 1.738 K km s⁻¹ (peak value). In the central and right panels, the contour levels are 0.322, 0.805, 1.127, and 1.44 K km s⁻¹ (peak value), and 0.624, 0.936, 1.248, 1.56, and 1.75 K km s⁻¹ (peak value), respectively. The blue contours display 610 MHz emission at 1.1 (5σ) and 1.54 (7σ) mJy beam⁻¹ from Paredes et al. (2014). Green crosses mark the locations of the identified cores. Green dashed and dotted lines indicated the arc-like structures. The beam size and physical scale are displayed in each lower-right corner.